dbcve.org
Dollar Bank MobileApplication · Dollar Bank

CVE-2017-5905

MEDIUM · 5.9 CVSS v3.1 Published 2017-05-05
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
The Dollar Bank Mobile app 2.6.3 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The Dollar Bank Mobile app 2.6.3 for iOS fails to perform proper X.509 certificate validation on SSL/TLS connections, allowing man-in-the-middle attackers to intercept encrypted traffic by presenting fraudulent certificates. This enables credential theft and session hijarception.

MitigationImplement proper certificate chain-of-trust validation and hostname verification in the app's networking layer, along with certificate pinning for the bank's server certificates to prevent MITM attacks.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Dollar Bank MobileApplication
Affected:= 2.6.3

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify if Dollar Bank Mobile app is installed
    On managed iOS devices, check installed applications list or have users verify if they have Dollar Bank Mobile app installed
    Affected if Dollar Bank Mobile app is present on any iOS device in the environment
  2. Check installed app version
    On iOS devices, view the app version in the App Store listing, in Settings > Apps > Dollar Bank Mobile, or check the app's bundle version information
    Affected if The installed version is exactly 2.6.3
  3. Note this is a client-side vulnerability
    The flaw exists within the app code itself, not in any server configuration. The app fails to validate SSL/TLS certificate chains properly during network connections
    Affected if The vulnerable app version 2.6.3 is used to connect to banking services

A user is affected if Dollar Bank Mobile app version 2.6.3 is installed on any iOS device in their environment and is used to access banking services.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper certificate chain-of-trust validation and hostname verification in the app's networking layer, along with certificate pinning for the bank's server certificates to prevent MITM attacks.

Fix this in Dollar Bank Mobile Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2017-5905 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data